Speaker



FIG. 1 is a front, perspective view of a speaker in accordance with the present design;

FIG. 2 is a back, perspective view of the speaker in accordance with the present design;

FIG. 3 is a front, side view of the speaker in accordance with the present design;

FIG. 4 is a back, side view of the speaker in accordance with the present design;

FIG. 5 is a left-side view of the speaker in accordance with the present design;

FIG. 6 is a right-side view of the speaker in accordance with the present design;

FIG. 7 is a top view of the speaker in accordance with the present design; and,

FIG. 8 is a bottom view of the speaker in accordance with the present design.

The broken lines shown in the drawings illustrate portions of the speaker that form no part of the claimed design. 

CLAIM The ornamental design for a speaker, as shown and described. 